BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 180 58.1%
2 United States 48 15.5%
3 Germany 34 11%
4 Canada 24 7.7%
5 Netherlands 11 3.5%
6 Taiwan 3 1%
7 United Kingdom 2 0.6%
8 Russia 2 0.6%
9 Singapore 2 0.6%
10 France 2 0.6%
11 Hong Kong 1 0.3%
12 Sweden 1 0.3%